Highway ETC performance rapid detection vehicle system

Abstract

The invention discloses a highway ETC performance rapid detection vehicle system. ETC radio frequency physical information of an equidistant standard array antenna and wheel speed and vehicle speed information of a detection vehicle are acquired through an ETC performance detection module and a wheel speed encoder; and a mapping relationship between the ETC radio frequency acquisition informationand the acquisition point position is constructed to perform data processing to obtain a field intensity distribution condition of a lane pavement, and then a longitudinal deflection angle, a depression angle and an installation height of ETC antenna installation are obtained. According to the invention, the ETC performance of a toll station and a portal system can be rapidly and automatically detected, analyzed and evaluated without parking or road closure in a normal traffic environment, and a technical basis and a solution are provided for stable operation and scientific management and maintenance of ETC.

Description

technical field [0001] The invention relates to the technical field of signal detection, in particular to a vehicle system for rapid detection of ETC performance of expressways. Background technique [0002] With the implementation of the national transportation strategy of canceling provincial toll stations, my country's expressways have basically achieved full coverage of ETC lanes, and the toll model has basically completed the transition from the original closed toll to the segmented free-flow toll. In the face of such a huge number of toll stations and ETC lanes of the gantry system in the national road network, the quality of the ETC performance directly affects the stable operation of the toll system. Comprehensive testing is the key to ensuring the correctness and effectiveness of the ETC system. [0003] At present, the performance testing of expressway ETC is mainly based on the standard of "Dedicated Short-Range Communication for Electronic Toll Collection" (GB / T...

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Problems solved by technology

[0003] At present, the ETC performance test for expressways is mainly based on the "Short-range Communications for Electronic Toll Collection" (GB / T20851-2007) standard. The testers use hand-held spectrum analyzers to test the ETC through manual, single-point, and random checks. The detection efficiency of this method is Low, the process takes a long time, and road closures are required, posing huge safety hazards. On the one hand, each inspection requires a large number of inspection and safety personnel and related safety facilities. The general process is to prepare for road closures, arrange safety facilities, and implement Detection, completion of detection, restoration of traffic, the entire detection process is laborious and time-consuming, especially for the operation detection of the existing expressway ETC gantry system, the traditional detection method is difficult to carry out; on the other hand, the existing detection methods are low in automation and mainly use single Manual and manual methods are the main methods, data processing is also presented in the form of paper-based data tables, and there is a lack of systematic data management

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